Grow Heirloom Ageratum – Plant Dondo Blue Ageratum Seeds
An outstanding cut flower in a shocking shade of blue, Dondo Blue Ageratum truly shines when planted in groups to create a compact, dense flowering bush. Butterflies love them, and like all ageratums, Dondo Blue adds easy garden color in borders or containers from summer until frost.
Name:Ageratum Seeds – Dondo Blue
Botanical Name:Ageratum houstonianum
Light Requirement:Full Sun, Partial Sun
Plant Type:Tall and Compact Mounding Habit, Ovate Leaf Shape
Features:Heirloom, Ground Cover, Fragrant, Drought Tolerant, Deer Resistant, Rabbit Resistant, Attracts Pollinators, Container Garden, Cut Flower Garden
Blooms:Summer, Late Summer, Early Fall, Fall
Days to Maturity:60-90 Days
Plant Height:24 inches
Plant Spacing:6-10 inches
Planting Depth:1/8 inch
Sowing Method:Direct Sow
Seeds per Packet:300 mg
Seeds per Pound:3, 404, 400
Hardiness Zones:3, 4, 5, 6, 7, 8, 9, 10
How to Plant Dondo Blue Ageratum
When to Plant Ageratum Seeds
Plant outdoors directly after the last frost of the season, or start indoors 8-10 weeks before last frost.
Where to Plant Ageratum Seeds
Plant in full sun where available (6-8 hours of sun per day). Ageratum will tolerate partial shade (4-6 hours of sun per day), and prefers prefers partial shade in exceptionally hot environments. Plant in moist, average, well draining soils. Ageratum is prone to wilt if left dry, and may die outright if left dry for too long in a hot environment.
How to Plant Ageratum Seeds
Lightly press 4-8 seeds into the surface of the soil no deeper than 1/8th of an inch. Seeds should not be buried, as exposing seeds to sunlight is needed for germination. When sown indoors, transplant them into the garden 6-10 inches apart.
How to Care for Ageratum
Ageratum is a low-maintenance plant, and it will readily fill in garden beds as long as it has enough water. Ageratum will bloom consistently on it’s own without the need of deadheading as old blooms will naturally fall off as new blooms arrive. Ageratum flowers less vigorously in hotter environments. Roots may rot in poorly draining soils. Powdery mildew may be present if overhead watered, so watering around the roots of the plant is advised. Ageratum grows best in areas with good air circulation.
Download Printable Planting Guide
1/4 Pound Package